Centrifugal fan condensers; Compressed air pumps; Counter-current swimming machines for use in swimming pools to enable swimming in place against an adjustable counter-current, featuring pumps, motor, and adjustable current director outlets; Fan belts for motors and engines; Fans for machine engines; Fans for motors and engines; Filters for cleaning cooling air, for engines; Gas diverters consisting of a pump, storage and refilling tank, pre-heater, vaporizer, recuperator, condenser and valves; Hydraulic pumps and motors for hydrostatic systems, comprised of pumps, motors, valves, switches, sensors and electronic controls, for hydraulic drives and force transmission in machines, machine tools, grinding and food processing machines and in off-road-vehicles; Pneumatic pumps; Pumps for machines; Variable speed drives for use with fluid pumping systems; Variable speed scroll compressors for air conditioners and heat pumps; Water pumps for use in motors and engines; Water pumps for spas, baths, whirlpools, swimming pools, water filtering units